Description

Reactive Red 67 is a high-performance, water-soluble azo dye belonging to the reactive dye class, designed for covalent bonding with textile fibers. Its primary value lies in producing vibrant, wash-fast red shades on cellulosic materials like cotton and viscose. This dye is essential for textile manufacturers and dye houses seeking reliable coloration with excellent reproducibility and fastness properties. The compound is identified by CAS No. 12226-34-5.

Application

Reactive Red 67 is engineered for demanding textile dyeing and printing processes. Its key applications include:

• Exhaust Dyeing of Cotton: For batch-wise dyeing of yarns, knits, and woven fabrics to achieve deep red hues.
• Continuous Dyeing Processes: Used in pad-batch and pad-steam ranges for efficient, large-scale fabric production.
• Textile Printing: Formulated for screen and rotary printing pastes to create sharp, durable red patterns on cellulose.
• Viscose and Lyocell Dyeing: Provides excellent color yield and fastness on regenerated cellulose fibers.
• Blend Fabric Dyeing: Can be used in combination with other dye classes for cotton-polyester blends.
• Technical Textiles: Suitable for dyeing industrial fabrics where color consistency is critical.

Basic Information

Product Name	Reactive Red 67
CAS No.	12226-34-5
Molecular Formula	C29H19ClN7Na4O19S6
Molecular Weight	1136.28 g/mol
Synonyms	Reactive Red 67; C.I. Reactive Red 67; Levafix Red CA; Remazol Red CA; Drimarene Red K-4BL; Reactive Red K-4BP; Reactive Brilliant Red K-4G; 2,7-Naphthalenedisulfonic acid, 5-[[4-chloro-6-[[3-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-4-sulfophenyl]amino]-1,3,5-triazin-2-yl]amino]-4-hydroxy-3-[[4-[[2-(sulfooxy)ethyl]sulfonyl]phenyl]azo]-, sodium salt (1:4)
EINECS	Contact for details

Quality Control

Every batch of Reactive Red 67 is manufactured under a strict quality management system. We perform comprehensive testing to ensure consistent shade, strength, solubility, and fastness properties. Key parameters like color value, fixation rate, and impurity profile are verified against stringent internal specifications. A Certificate of Analysis (COA) detailing purity, physical properties, and performance characteristics is provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents and excessive heat. The product is hygroscopic (moisture-sensitive); ensure the original packaging is sealed after use to prevent moisture absorption and caking.

Specification

Item	Specification
Appearance	Reddish-brown powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 7.0%
Water Insoluble Matter	≤ 0.2%
pH (1% Solution)	6.0 - 8.0
Dusting Property	Low
Solubility in Water	≥ 80 g/L (at 50°C)
Fixation Rate	≥ 70% (Standard Conditions)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.